Corner-clamp for glass plates.



PATENTED FEB. 12, 1907,.

L. BARTELSTONE. CORNER CLAMP FOR GLASS PLATES.

APPLICATION FILED FEB 17 190B Inventor:

UNITED STATES LOUIS BARTELSTONE, or NEW YORK, N. Y.

CORNER-CLAMP FOR GLASS PLATES.

Application filed February 17, 1906. Serial No. 301,541.

To all whom it may concern:

Be it known that I, LoUIs BARTELSTONE, a citizen of the United States, and a resident of thev city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Corner-Clamps for Glass Plates, of which the followin is a specification,

My invention re ates to glass fronts such as are adapted to be used in stores, and to show-cases and the like, and particularlyto devices for securing the plate-glass of which such fronts or show-cases are constructed. Its objects are, among others, to provide a simple, strong, and durable clamp or-fasten-' ing for securing the edges of the late-glass, to permit a limited movement 0 the same,

so that they may accommodate themselves an illustrated in. the accompanying draw:

in s.

In the said drawings, Fi efl isan outsideview of a glass store- Ont-embodying my im roveme'nts. Fig; 2 is aperspective view 0 the clamping device on an'enlarged scale. Fig. 3 is a horizontal medial section of the same. Fig. 4 is adetail of one of the parts.

The outside an ular piece A is preferably made of metal and may be formed of any desired angle. Each of its arms is provided, with a groove or recess A on its inner side for the purpose of receiving and holding a suitable cement or other adhesive substance for the purpose of causing it to adhere to the glass. At the point where the two arms of the outside angular piece meet an aperture A is provided. ThlS aperture is substantially s heroida'l in form and is adapted to rec'eive' t'lie head B of the screw-bolt B, which is formed to fit the walls'of said aperture, so that it may move therein in any direction without being out of contact with the said walls at any Ipoint. i The screwolt B is provided with -a screwthread 13", adapted. to receive the milled screw-nut D. The angular clam 0 con- .sists of a straight central portion having;

Specification of Letters Patent.

- Patented Feb. 12, 1907.

an aperture which ermits theclamp to pass freely along the s ank of the bolt B, and Wings or flanges C, disposed at an angle to the central portion and substantially parallel to thearmsof the 'outer angular ,piece A. v In 0' 'eration the glass plates are first set u with t eir vertical edges in contact and with small 0' enings between said edges at intervals, w ich are preferably" formed by filing out a small groove in the edge of each plate. The cement-grooveA is then filled with a suitable cement and, the an ular piece A applied to thefexterifor of the plates. In applymg this piecev to the glass the screw-bolt B, which has previously been placed in its proper osi'tlonin the angular piece, is assed throu the p ates. t only remains to pass the then' screw: the nut downto clamp the edges *of the glass plates firmly betweenthe outerand inner angular pieces.

the groove ofthe outer angular piece is compressed between the saidf'piece and the surface of the glass, as the said angular piece being made of-metal will possess a certain amount 'a-limited extent under the pressure exerted the artsimay have a limited movement in all 'r'ections, and this enables them to ad= just themselves to different thicknesses or sli ht irregularities in the glass plates. The lin or spherical head of the bolt and its complemental recess or socket in the outer an ular piece contributes very materially to t is vice to the glass plates, and in this manner the danger of cracking the plates is avoided to a'very material extent. The milled nut D is also an important factor in the operation of the device,- as it aflords a ready purchase for the fingers and can be made so that it will cover the end of the bolt B no matter what the thickness of the glass plates may be. This coverin of the end of the bolt avoids the danger 0% injury to persons cleaning the ,windows and gives the entire device a neat and compact appearance.

adjust themselves ,to variations in the angle, position, and thickness of the glass plates is -useful not only in assembling the device, but in holdin 'the plates in position under various conditions to which the same are subclamp C over theinner end of the boltand v In this last oper-- ation it will be observed that the cement inof resiliency, which will permit it to spread to thereon. It will also be observed that all of automatic adjustment of the clamping de- -the a erture between the e gesof The ability of all the parts of the device to v jected in use without danger of breakage. The cement groove or pocket is also useful 1n making the outer angular piece more resilient, and thus preventing it from breaking the glass under many conditions. The use of cement in the manner herein described reduces the amount of pressure required to secure the "plates together, and this also lessens the. liability of breakage.

What I claim is 1. A device of the class described comcrising, in combination, a pair of singularly-disposed glass plates, a V-shaped clampingpiece exteriorly abutting each of said plates and having in its apex a spherical seat, a link having a spherical head freely movable within said seat, said link terminating interiorly of said plates, a clamping-piece interiorly abutting each of said plates opposite to the exterior piece,,and means for adjustabl'y securing said link to said interior lpiece, where by said plates may be clamped pieces and yieldably held together.

2. A'device of the class described comprising, in combination, a pair of angularly-disposed glass plates, a V-shaped clampingpiece exteriorly abutting each of said plates and having in its apex a spherical seat, the

plate abutting portions of said piece being etween said recessed, an adhesive within said recess 0 adapted to impose friction between said piece and abutt'ed plates, a link having a spherical head freely movable within said seat, said link terminating interiorly of said plates, a clamping-piece interiorly abutting each of said plates op osite to the exterior piece, and means for a justably securing said link to said interior piece whereby said plates may be clamped between said pieces and yieldably held together. i

3. A device of the class described comprising, in combination, a pair of angularly disposed plates, a V-shaped clamping-piece exteriorly abutting each of said plates, a link having a universal-joint connection with said piece, a clamping-piece interiorly abutting each of said plates opposite to the exterior "piece, and means adjustably securing said link to said interior piece whereby said plates may be clamped between said pieces and yieldably held together. v

W'itness my hand, this 7th day of February, 1906, at the city of New York, in the county and State of New York. i I

LOUIS BARTELSTONE. Witnesses:

ALAN MCDONNELL, S. J. Cox. 

